Factory Acceptance Test Completed for Landmark 4MWh Battery Energy Storage System (BESS)

We’re proud to announce the successful completion of the Factory Acceptance Test (FAT) for a landmark 4MWh Behind-the-Meter Battery Energy Storage System (BESS) designed and developed for a leading UK client.

 This state-of-the-art solution, delivered by Dale Power Solutions in collaboration with EFT Energy Solutions and global battery manufacturer BYD, marks a major step in supporting the UK's energy transition and enabling smarter, cleaner power use in commercial and industrial settings.

A Strategic Solution to Grid Challenges

As businesses across the UK face growing pressure to decarbonise, this BESS project demonstrates how energy resilience and sustainability can go hand in hand. The system will play a critical role in:

• Overcoming grid connection limitations, particularly in congested areas

• Storing surplus clean energy generated on-site via a solar PV array

• Discharging stored energy during peak demand or grid outages

• Maximising renewable energy use and reducing reliance on fossil fuels

By optimising the site’s energy profile, this BESS solution will help the client meet operational needs while delivering on ambitious sustainability commitments.

Powered by BYD MC Cube ESS Technology

At the heart of the project is the BYD MC Cube, a modular, scalable Energy Storage System (ESS) engineered to deliver high performance, safety, and flexibility in demanding applications. The 4MWh capacity allows for significant energy capture and release, enabling large-scale renewable energy integration and backup capability.

The system will operate behind-the-meter, meaning the energy is stored and used directly on-site, reducing dependency on the National Grid and supporting more efficient energy use. With the integration of renewable energy and battery storage, the facility will benefit from improved energy security and long-term cost savings.

Supporting the UK’s Green Industrial Future

This project reflects the UK’s wider push towards energy independence, sustainability, and industrial decarbonisation. Our client is leading the way with investments that not only cut carbon but also enhance operational resilience.

At Dale Power Solutions, we remain committed to delivering smart, integrated, and sustainable power systems that meet the evolving needs of our clients and the planet. The successful FAT is just the beginning; commissioning and deployment will follow later this year.

For more on our BESS capabilities and renewable integration services, get in touch with our team.

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